CVE-2025-22037
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Dereferencja wskaźnika null w ksmbd pozwala na zdalne wywołanie błędów w sesji SMB2.
CVSS
7.5
EPSS
69.6%
Exploit
none
Vendor
linux
Opis źródłowy (NVD)
In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix null pointer dereference in alloc_preauth_hash() The Client send malformed smb2 negotiate request. ksmbd return error response. Subsequently, the client can send smb2 session setup even thought conn->preauth_info is not allocated. This patch add KSMBD_SESS_NEED_SETUP status of connection to ignore session setup request if smb2 negotiate phase is not complete.
brak
Brak patcha
Źródła i daty
| Źródło | Wartość |
|---|---|
| NVD – CVSS | 7.5 |
| CISA KEV (aktywnie wykorzystywane) | Nie |
| FIRST EPSS (prawdopodobieństwo exploita) | 69.6% |
| Opublikowano (NVD) | 2025-04-16 15:15:56 UTC |
| Ostatnia modyfikacja (NVD) | 2026-10-08 00:46:56 UTC |
Referencje
- https://git.kernel.org/stable/c/8f216b33a5e1b3489c073b1ea1b3d7cb63c8dc4d (416baaa9-dc9f-4396-8d5f-8c081fb06d67) [Patch]
- https://git.kernel.org/stable/c/b8eb243e670ecf30e91524dd12f7260dac07d335 (416baaa9-dc9f-4396-8d5f-8c081fb06d67) [Patch]
- https://git.kernel.org/stable/c/c8b5b7c5da7d0c31c9b7190b4a7bba5281fc4780 (416baaa9-dc9f-4396-8d5f-8c081fb06d67) [Patch]
- https://git.kernel.org/stable/c/ca8bed31edf728a662ef9d6f39f50e7a7dc2b5ad (416baaa9-dc9f-4396-8d5f-8c081fb06d67) [Patch]
- https://git.kernel.org/stable/c/cce57cd8c5dead24127cf2308fdd60fcad2d6ba6 (416baaa9-dc9f-4396-8d5f-8c081fb06d67) [Patch]
- https://www.zerodayinitiative.com/advisories/ZDI-25-310/ (416baaa9-dc9f-4396-8d5f-8c081fb06d67) [Third Party Advisory]